caa a22 4500 475751299 CHVBK 20180406123524.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1023/A:1009891610140 doi (NATIONALLICENCE)springer-10.1023/A:1009891610140 Temporally-explicit models of fire and forest [Elektronische Daten] [Scott Franklin, Mirjami Tolonen] Pollen and charcoal data from varved sediments of Lake Ahvenainen, southern Finland, were examined through ordination analyses to determine temporal groupings of vegetation. The ordination 'scontinually' changed throughout the pollen profile, indicating nonequilibrium system dynamics. However, temporal associations that were stationary existed during the history of vegetation change at Lake Ahvenainen, and these temporal associations were nested in a hierarchy. Weighted averaging regression and calibration were used to model the relationship between fire and vegetation within each temporal association. Fire was significantly related to the vegetation for nearly all temporal associations. Community dynamics within temporal associations were examined with cross-correlation analysis. Taxa were correlated with fire occurrence (charcoal fragments) within the temporal associations and classic successional recovery was confirmed. In addition, two temporal associations showed evidence of chaotic behavior. The long-term pollen-charcoal analysis supported three theories of system dynamics: (1)nonequilibrium long-term dynamics, (2)hierarchical structuring of temporally stationary associations, and (3)chaotic dynamics in stationary associations. These theories are not necessarily contradictory, but are scale dependent. Kluwer Academic Publishers, 2000 Boreal forest nationallicence Chaos nationallicence Community dynamics nationallicence Nonequilibrium dynamics nationallicence Secular succession nationallicence Franklin Scott Department of Plant Biology, Southern Illinois University, 62901-6509, Carbondale, IL, USA aut Tolonen Mirjami Department of Botany, University of Helsinki, Unioninkatu 44, FIN-00170, Helsinki, Finland aut Plant Ecology Kluwer Academic Publishers 146/2(2000-02-01), 145-166 1385-0237 146:2<145 2000 146 11258 https://doi.org/10.1023/A:1009891610140 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009891610140 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Franklin Scott Department of Plant Biology, Southern Illinois University, 62901-6509, Carbondale, IL, USA aut NATIONALLICENCE 700 1- Tolonen Mirjami Department of Botany, University of Helsinki, Unioninkatu 44, FIN-00170, Helsinki, Finland aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 146/2(2000-02-01), 145-166 1385-0237 146:2<145 2000 146 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer